Aligning Business Processes to SOA


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Aligning Business Processes to SOA

  1. 1. Aligning Business Processes to SOA B. Ramamurthy 05/06/10 Page
  2. 2. Topics <ul><li>Review of architectural roadmap: </li></ul><ul><ul><li>Fundamental SOA </li></ul></ul><ul><ul><li>Networked SOA (esp. figures in Ch.6) </li></ul></ul><ul><ul><li>Process oriented SOA </li></ul></ul><ul><li>Lets design an SOA </li></ul><ul><li>Relating business processes and SOA (Chapter 7) </li></ul><ul><li>Demo: consuming a web service </li></ul><ul><li>Midterm: 90 minutes exam on chapter 1-7 Lets decide the date for the exam </li></ul>05/06/10 Page
  3. 3. Business Process Management (BPM) <ul><li>BPM generally focuses on the strategic and operational aspects of process orientation in a given business area. </li></ul><ul><li>Mapping BPM model to an enterprise IT landscape is a challenging task. </li></ul><ul><ul><li>Business side of BPM are the keywords such as ISO 9000 and Six Sigma </li></ul></ul><ul><ul><li>IT side of BPM is accompanied by keywords such a process modeling and workflow management (see Fig. 7.1) </li></ul></ul>05/06/10 Page
  4. 4. 05/06/10 Page IT Organization Business Organization EAI Workflow management ERP B2Bi Rules Engine Web Service Six Sigma Value Chain Activity based costing Continuous Process improvement
  5. 5. Business Process Management System (BPMS) <ul><li>BPMS provides the technical platform for realizing BPM management initiatives. </li></ul><ul><ul><li>BPM engine, facilities for BPM monitoring, design tools, and facilities for simulation. </li></ul></ul><ul><ul><li>“ BPM encompasses the discovery, design, and deployment of business processes, as well as executive, administrative and supervisory control over them to ensure that they remain compliant with business objectives” [SF03] </li></ul></ul><ul><ul><li>A BPM software product should enable business analysts, software developers, and system administrators to model and deploy business processes ( at development time) and to interact with, monitor and analyze process instances 9at run time). </li></ul></ul><ul><ul><li>Lets discuss Modeling and execution architecture of BPMS. </li></ul></ul>05/06/10 Page
  6. 6. Modeling Languages <ul><li>Most are based on work by Petri [Rei 92] and Milner [Mil 80] </li></ul><ul><li>Business Process Execution Language for WS (BPEL4WS) </li></ul><ul><li>IBM’s Web Services Flow Langauge (WSFL) </li></ul><ul><li>Microsoft’s XLANG </li></ul><ul><li>BPML by SAP, Sun and other vendors. </li></ul><ul><li>BPMN (Business Process Modeling Notation) is a language by BPMI is to support standardized, graphical representation of business process diagrams. </li></ul><ul><li>BPMN is positioned at the interface of business and IT. </li></ul><ul><ul><li>UML is within IT </li></ul></ul><ul><ul><li>BPMN aims to become the defacto standard used between IT and business to discuss the scope and functionality of processes and applications. </li></ul></ul>05/06/10 Page
  7. 7. BPM System Architectrure 05/06/10 Page Process Manager Process Definition Repository Process Instance repository Transaction manager Connector framework Process engine Interprets VPML, BPEL4WS Backend applications Middleware Design tool Deploy & configure Monitor & manage
  8. 8. BPM vision <ul><li>BPM vision is strong one </li></ul><ul><ul><li>Instead of hard coding business processes into applications, it facilitates modeling, modifications, reconfigurations, and optimization of process definitions with graphical tools that can be used by less technology-oriented business analysts. </li></ul></ul>05/06/10 Page
  9. 9. BPM Alignment to SOA 05/06/10 Page Enterprise Processes BPML Process layer BPMS Basic layer Intermediary layer
  10. 10. BPM and process-enabled SOA <ul><li>Data & functions  Objects  Services </li></ul><ul><li>With SOA we take a deliberate step back from the highly complex, fine grained dependent distributed object models toward less complex, relatively coarse-grained, loosely coupled (ie. less independent) component interfaces. </li></ul>05/06/10 Page
  11. 11. Core business logic vs. process control logic <ul><li>Both these concepts comprise data and functionality. </li></ul><ul><li>Examples of core business logic: data access services, complex calculations, complex business rules </li></ul><ul><li>Process control logic are related to non-tangible objects in the service industry: contract management, supply chain management, sales of complex products, software outsourcing processes. </li></ul><ul><li>Design implications for architects: decomposition of SOA should pay attention to the above to the above. </li></ul><ul><ul><li>For example, an architect may decide to design the core processes in house and buy the rest from outside source. </li></ul></ul>05/06/10 Page
  12. 12. Discovering services online <ul><li>Universal Description, Discovery and Integration (UDDI) is a platform-independent, XML-based registry for businesses worldwide to list themselves on the Internet. </li></ul><ul><ul><li>The information (ex: WSDL) discovered is for programmatic consumption. </li></ul></ul><ul><li>For manual search for services (WSDL) use: </li></ul><ul><li> </li></ul><ul><li>use this for choosing services in the domain of your term project. </li></ul>05/06/10 Page
  13. 13. Web Services <ul><li>Web Services is a technology that allows for applications to communicate with each other in a standard format. </li></ul><ul><li>A Web Service exposes an interface that can be accessed through messaging . </li></ul><ul><li>Deployable unit. </li></ul><ul><li>A Web service uses protocol to describe an operation and the data exchange with another web service. Ex: SOAP </li></ul><ul><li>Platform independent, say, through WSDL. </li></ul><ul><li>Publishable, discoverable, searchable, queryable </li></ul><ul><li>Scalability issues: A group of web services collaborating accomplish the tasks of a large-scale application. The architecture of such an application is called Service-Oriented Architecture (SOA). </li></ul>05/06/10 Page
  14. 14. Demo <ul><li>Lets look at an example for a web application that consumes a web services. SpellChecker </li></ul><ul><ul><li>It consumes a web service provided by </li></ul></ul>05/06/10 Page